Alexander Sumer

Sydney, NSW, Australia
github.com/alexandersumer · linkedin.com/in/alexandersumer
AI platform engineer at Atlassian building agent systems and helping product teams adopt them.

Experience

Atlassian Sydney, Australia
Senior Machine Learning Systems Engineer, AI Platform Jul 2025 – Present
Senior Engineer, Jira Platform Mar 2024 – Jun 2025
Earlier Jira Platform roles: Engineer, Graduate & Intern Nov 2019 – Feb 2024

Merged 1,903 PRs in FY26, the most at Atlassian, by directing and reviewing coding agents. Delivered 3 cross-team talks and workshops on using coding agents effectively. Received 5 Big Kudos, including one for each talk and 2 Fix-of-the-Week awards from Atlassian's CTO of AI and Teamwork.

Sympli · Developer · Oct 2018 – Jul 2019
Built a server-side form generator (JSON → React) for electronic real estate transactions, a serverless healthcheck service (Lambda, SNS), and introduced unit testing standards across the team.
WiseTech Global · Associate Developer · Aug 2017 – Sep 2018
Built a coordinate-based distance/time matrix API that selected algorithms based on graph structure. Replaced SQL literals with table-valued parameters and improved query performance 4×.

Education

University of New South Wales Sydney, Australia
Bachelor of Computer Science Jul 2016 – May 2020

Skills & Interests

Technical focus Agent platforms, coding agents, multi-agent orchestration, secure sandboxing, distributed systems Interests Painting and the arts, reading and writing, fitness, volleyball, road trips